<template>
  <div id="app">
    <router-view  v-if="isRouterAlive" />
  </div>
</template>

<script>
export default {
  name: 'App',
  provide() {
    return {
      reload: this.reload,
    }
  },
  data() {
    return {
      isRouterAlive: true,
    }
  },
  mounted(){
    document.addEventListener("visibilitychange", ()=> {
      if (!document.hidden) {   //处于当前页面
        location.reload();
      }else{                    //我被隐藏了
        // console.log('我被隐藏了')
      }
    });
  },
   methods: {
    reload() {
      this.isRouterAlive = false
      this.$nextTick(() => {
        this.isRouterAlive = true
      })
    }
  }
}
</script>
